Lee made her international debut at the 2017 Asian Junior Championships and won a bronze medal with the South Korean team.

[1] She also competed at the 2018 Asian Junior Championships where the South Korean team won another bronze medal, and Lee finished eighth in the uneven bars final.

[2] Lee finished seventh in the all-around at the 2019 Korean National Team Selection with the second-highest score on the uneven bars.

[3] She was then selected to compete at the 2019 Junior World Championships alongside Hyun Jin-ju and Shin Sol-yi, and the team placed 10th.

[14] She competed at the 2023 World Championships alongside Yeo Seo-jeong, Shin Sol-yi, Lee Yun-seo, and Eom Do-hyun, and they placed 11th in the qualification round.